<template>
  <div class="star" :class="starType">
    <span
      v-for="(itemClass,index) in itemClasses"
      :class="itemClass"
      class="star-item"
      :key="index"
    ></span>
    222222222222
  </div>
</template>

<script>
const LENGTH = 5;
const CLS_ON = "on";
const CLS_HALF = "half";
const CLS_OFF = "off";
export default {
  props: {
    size: {
      type: Number
    },
    score: {
      type: Number
    }
  },
  computed: {
    starType() {
      return "star-" + this.size;
    },
    itemClasses() {
      let result = [];
      let score = Math.floor(this.score * 2) / 2;
      let hasDecimal = score % 1 !== 0;
      let integer = Math.floor(score);
      for (let i = 0; i < integer; i++) {
        result.push(CLS_ON);
        console.log("+++++++++++" + result);
      }
      if (hasDecimal) {
        result.push(CLS_HALF);
      }
      while (result.length < LENGTH) {
        result.push(CLS_OFF);
      }
      return result;
    }
  }
};
</script>
<style lang="scss">
@import "../assets/css/mixin";
.star {
  font-size: 0;
  width: 210px;
  height: 50px;
  .star-item {
    width: 20px;
    height: 20px;
    display: inline-block;
    background-repeat: no-repeat;
    background-size: 20px 20px;
    margin-right: 6px;
  }
  &:last-child {
    margin-right: 0;
  }
  .on {
    @include bg-image("../assets/img/star48_on");
  }
  .half {
    @include bg-image("../assets/img/star48_half");
  }
  .off {
    @include bg-image("../assets/img/star48_off");
  }
}
</style>